B5

ULTRASONIC THICKNESS GAUGE

OPERATING MANUAL

No._________

TABLE OF CONTENTS Introduction 1 Technical specification and operation 1.1 Purpose 1.2 Technical characteristics 1.3 Principle of operation 1.4 Marking 1.5 Package 2 Delivery set 3 Thickness gauge operating modes 3.1 Thickness gauge operating modes 3.2 Functions of key buttons 3.3. Designation of the indicator control marks 4 Intended use 4.1 Thickness gauge preparation for use 4.1.1 Rechargeable batteries operation and indication of their low capacity 4.1.2 Battery recharging 4.2 Work procedure 4.2.1 Setting probe zero 4.2.2 Thickness gauge calibration 4.2.2.1 Thickness gauge calibration to a check sample 4.2.2.2 Thickness gauge calibration to a known sound velocity 4.2.3 Measurement resolution setting 4.2.4 Indicator illumination turning on/off 4.2.5 Setting the power-off time 4.2.6 Adjustment of a thickness gauge gain value 4.2.7 Turning minimum value fixation on/off 4.2.8 Measuring of component thickness 4.2.9. Recording of results in memory and their review 4.2.9.1 Recording of results in memory 4.2.9.2 Reading of results stored in the device’s memory 4.2.9.3 Thickness gauge memory cleaning 4.2.10 Thickness gauge shutdown 4.2.11 Transfer of measuring results to PC 5 Maintenance 6 Operating and service life and manufacturer's warranty 7 Test certificate Appendix 1 Thickness gauge appearance Appendix 2 Appearance of the probes connected to the thickness gauge B5 Appendix 3 Transfer of measuring results to PC using Constanta-DATA software Appendix 4 Sound velocities of some common materials.

This operating manual is used to get acquainted with an ultrasonic thickness gauge hereinafter referred to as "the thickness gauge”.

The operating manual contains a design description, an operating principle, main maintenance and operating instructions of the thickness gauge.

1 Technical specification and operation 1.1 Purpose The thickness gauge is used to measure the thickness of the

components made of constructional metal alloys and isotropic non-metallic materials with access to only one side of these components using dual element probes.

In the thickness gauge a contact method of acoustic contact provision is used by pressing gauging surface of the probe against the surface of the controlled component without scanning or with it in the minimum search mode.

1.2 Technical characteristics

1.2.1 Range (for steel) 0.5 to 200mm. 1.2.2 Thickness range, h, mm, with a probe:

10А6 0.6 20

10A4 0.5 10

5A10 1.0 200

2,5A10 1,5 100

10A2x8 0,6 10

5A6 1.0 30

2,5A12 3.0 200

10A604 0,5 10

0,4 10 (for aluminum)

Hight temperature probe (up to 350°C)

5T12 1.0 200

10T6 0.8 20

5T10 1.0 100

2,5T12 2.5 200

1.2.3 Count resolution, mm, for the following range:

- 0.50 99.99 0.01 or 0.1

- 100.0 200.0 0.1 1.2.4 Sound Velocity Range: 1000 to 9999 m/s. 1.2.5 Power source: 9V size. 1.2.6 The thickness gauge displays a message about battery charge and

an additional message about a very low battery capacity. 1.2.7. When the thickness gauge shuts down the settings for the probe

(zero adjustment, gain value, determined sound velocity in the material) are stored in its memory.

1.2.8 The thickness gauge provides automatic probe recognition and parameters setting for the probes with determined metrological performance provision.

1.2.9 You can specify the time of an automatic shutdown of the thickness gauge from 1 up to 10 minutes or set an operating mode without automatic shutdown of the device.

1.2.10 Weight, kg, no more than: - of the sensory processing module 0.22; - of probes 0.08. 1.2.11 Dimensions, mm, no more than: - of sensory processing module 125х60х25;

- of probes 20х60. 1.3 Principle of operation 1.3.1 The thickness gauge consists of a sensory processing module (its

appearance is shown in Appendix 1) and probes (their appearances are shown in Appendix 2).

An operating principle of the thickness gauge with probes is based on ultrasonic pulse-echo. It is a measurement method which uses the properties of ultrasonic waves to echo from interface of two media with different acoustic resistances.

1.3.2 The sensory processing module of the thickness gage generates an initiating pulse supplied to a probe emitting plate which radiates ultrasonic waves through a delay line into the component. An ultrasonic wave propagates in the component up to an interior surface, reflects from this surface, propagates in the reverse direction, passes through the delay line and is received by a receiving plate. Ultrasonic waves propagation time is undoubtedly connected with the component thickness h. Received pulse is amplified and transmitted to the input of the sensory processing module, which generates digital code N proportional to pulse propagation time in the component taking into account propagation time in the delay lines. Then an embedded microcomputer calculates the component thickness h.

Computed value h is displayed on the indicator. If there is an acoustic contact of the probe with the component the indicator shows the following coupling indicator:

1.3.3 Ultrasonic dual element probes provide thickness measurement in the range from 0.5 to 200 mm. Delay lines are made of polyimide or composite materials. It provides increased wear resistance of the probes and possibility of operation on rough surfaces. Emitting surface of the probe is flat, round or square.

1.3.4 The thickness gauge design includes a sensory processing module and probes connected via two coaxial connectors. Ports are located on the device faceplate. Keypad are located on the front panel, on which you can also find a digital indicator and the metal probe-disc. There is a battery chamber in the low part of the thickness gage case under the cover, in which a battery is installed. Removable holder attached to the end cover with the help of a screw is used to carry the thickness gauge.

1.4 Marking

The end cover has a plate with a serial number and a year of issue. 1.5 Package The sensory processing module and probes are stored in a container

which protects them from damage during transportation and storage. 2 Delivery set A thickness gauge delivery set is specified when this device is ordered. It

consists of a basic set and optional accessories at the customer’s option. Items included into a basic delivery set are given in Table 4. Optional accessories are given in Table 5.

Table 4 Basic delivery set

No. Item Q-ty, pcs.

1 Ultrasonic thickness gauge B5 1

Component parts

2 Sensory processing module 1

3

Ultrasonic probes given in paragraph 1.2.2 except high-temperature probes

2

4 Alcaline cell, 9V size 1

5 Communication cable to IBM-PC

1

6 CD with Constanta- DATA 1

software

7 Container 1

Maintenance documents

8 Operating manual 1

Table 5 Optional accessories

No. Optional accessory Remarks

1 Ultrasonic probes mentioned in item 1.2.2

2 Rechargeable battery 9V size

3 Charging device for batteries

3 Thickness gauge operating modes 3.1 A short description of operating modes is given in Table 6. Toggling

between operating modes is made by pressing MODE button.

Table 6

Mode

Information displayed on the

indicator

1. Main mode of thickness gauge operation. In this mode it is possible to make measurements, set probe zero and gain value, calibrate and record measuring results in the device memory. The device enters this mode immediately after turning it on.

2. Setting resolution mode.

3.2 Functions of keypad MODE – the key is used for selecting and sequential toggling through the

menu of modes. If you press and hold this key the indicator sequentially displays the

names of the modes in accordance with their sequence numbers given in Table 6.

In order to enter the selected mode press the

“☼☼ \ ” button (choice confirmation).

In order to escape the selected mode, press the MODE button.

“☼☼ \ ” – is a multifunctional key:

- in the main measuring mode it is used to turn the back light on/off; - in other cases it is the key of the choice confirmation. MEMORY – the key is used to allow work with the memory (recording of

measuring results in the device memory). ▲ – is a multifunctional key: - while working with the device’s memory in the measuring mode it is

used to record results in the memory with the increase of the memory cell number on one unit.

- in the “reading the memory” mode it is used to scroll up the numbers of memory cells, in which the results are recorded;

- in other modes (of setting resolution, setting the time power off, connection of a new probe, function of calibration and gain value setting) it is used to increase the measured (adjusted) parameter.

3. Setting/reading velocity mode.

4. Mode of setting the time power off.

5. Mode of turning minimum measured value fixation on/off.

6. Reading the memory mode.

7. “Transfer of measuring results to PC” mode

▼ – is a multifunctional key: - while working with the device memory in the measuring mode it is used

to record results in the place of the last measuring result recorded into the memory;

- in the “reading the memory” mode it is used to scroll down the numbers of memory cells, in which the results are recorded;

- in other modes (of setting resolution, setting the time power off, function of calibration and gain value setting) it is used to decrease the measured (adjusted) parameter.

GAIN – it is used to turn the mode of “setting the gain value” on/off in the

main measuring mode. The gain value is shown on the indicator in the form of the following

message:

Fig. 1

The gain value is displayed in dB relative to the input signal level. It can be changed in the range +20…+60dB with the step of 2dB.

To increase the gain value press the “▲” key, to decrease it - press the “▼” key.

ZERO – the key is used for setting probe zero. CAL – the key is used to allow a single-point calibration of the thickness

gage on the check sample. ON/OFF – the key is used to turn the device on and off. 3.3. Designation of the indicator control marks 3.3.1 Mark “Coupling indicator”. The mark appearance for different

modifications displayed on the indicator is shown in Fig.2.

Fig. 2

– the indication of this control mark signals about the presence of the

acoustic contact (i.e. it says about the return of the reflected ultrasonic echo-pulse into the device).

3.3.2 Mark “min” (Minimum). The mark appearance for different modifications displayed on the indicator is shown in Fig.3.

Fig. 3

– the indication of this control mark means that the thickness gauge

works in the mode of minimum measured value fixation. 3.3.3 Mark “Mem”. The mark appearance for different modifications

displayed on the indicator is shown in Fig.4.

Fig. 4

– the indication of this control mark means that the work with the memory

of measuring results is allowed. 3.3.4 Mark “Calibration”. The mark appearance for different

modifications displayed on the indicator is shown in Fig.5.

Fig. 5

– the indication of this control mark means that calibration procedure is allowed (sound velocity setting according to the sample piece).

3.3.5 Mark “Gain”. The mark appearance for different modifications displayed on the indicator is shown in Fig.6.

Fig. 6

– the indication of this mark means that during the control the operational

adjustment of the gain value is allowed.

4 Intended use 4.1 Thickness gage preparation for use Insert a battery into the battery chamber observing polarity of contacts. Connect a required probe to the connectors on the faceplate of the

sensory processing module.

Turn the device on by pressing "ON/OFF" button on the keypad. 4.1.1 Rechargeable batteries operation and indication of their low

capacity If batteries have low capacity the following messages appear on the

display: There are three conditions of battery charge indication levels: The first stage: normal battery charge (Fig. 7)

Fig. 7

The second stage: the battery has a charge less than 7.3 V. Battery

recharging is required (Fig. 8).

Fig. 8

The third stage: the battery has a charge less than a critical level

(voltage less than 7.0 V). Metrological performance of the thickness gage can't be ensured (Fig. 9).

Fig. 9

The fourth stage: the battery has a charge less than 6.5 V.

In this case the indicator shows the message about a very low battery capacity during 5 seconds.

Fig. 10

Then the device will automatically turns off. 4.1.2 Battery recharging In order to recharge the battery it is necessary to connect it to the

charging device terminals observing polarity of contacts and to connect the charging device to the mains. The sign of normal operation of the charging

device is glowing of the indicator on its housing. Batteries full charge time from the charging device is no less than 12 hours. Battery recharging must be carried out without time interruprion.

It is not allowed to leave the charging device during recharging without observation.

To prevent the breakdown of the rechargeable battery during long-term storage in the thickness gauge it is necessary to recharge it every 1.5 months even if the thickness gauge isn't used.

4.2 Work procedure 4.2.1 Setting probe zero To prevent the influence of ultrasonic waves propagation time in the

delay lines on the result of thickness measuring h, it is necessary to set probe zero before taking measurements, wherefore:

- apply couplant to the metal probe-disc built into the thickness gage housing.

- place a probe by its gauging surface on the metal probe-disc and tightly press it against it;

- press the ZERO key. After that the indicator will show the whole range of messages (Table 7) informing about the process of a probe zero setting.

Table 7

Information displayed on the indicator

and then consecutively in the presence of acoustic contact:

According to the measuring results you should compensate the influence of ultrasonic waves propagation time in the delay lines on the result of thickness measuring h. The indicator automatically shows the measured value of ultrasonic thickness of the metal probe-disc for the specified sound velocity (for the sound velocity of 5920 m/s, readings are 6.00 +/- 0.05 mm). When you carry out operations according to this paragraph you should always press the probe against the metal probe-disc.

4.2.2 Thickness gauge calibration It is necessary to calibrate the thickness gage if you want its readings to

meet the real values of the component thickness. There are two variants of the thickness gage calibration – calibration to a known thickness of sample pieces and calibration to a known sound velocity.

4.2.2.1 Thickness gauge calibration to a known thickness of sample pieces

This calibration is carried out to control components with unknown sound velocity or when measurements must be taken with great accuracy.

In order to calibrate a thickness gauge to a known thickness of sample pieces you should:

- prepare sample pieces made of the material and according to the technology similar to the test component and measure their thickness in the specific points;

- prepare the thickness gauge for operation in accordance with paragraph 4.1.

- set a probe zero in accordance with paragraph 4.2.1; – press the CAL key. The mark “Calibration” will display on the

indicator. - apply couplant to the sample piece, press the probe against the sample

piece, making sure that the probe sits flat against the surface of the sample and wait till the mark “Coupling indicator” is illuminated and the thickness reading h is indicated;

- Using the “” and “” keys reach the accordance of h readings on the thickness gauge indicator with the sample piece thickness;

– press the CAL key to exit the calibration mode (the mark “Calibration” should go out).

A new value of sound velocity will be automatically shown on the indicator after the calibration (and entering the main measurement mode).

Note. We recommend you to write down a sound velocity value of the material in your workbook for further use while calibrating the thickness gage to a known velocity to control the components made of the same material.

4.2.2.2 Thickness gauge calibration to a known sound velocity. Thickness gauge calibration to a known sound velocity is carried out

when its value is known for the material to be measured.

In order to calibrate a thickness gauge to a known sound velocity you should:

- prepare the thickness gauge for operation in accordance with paragraph 4.1.

- set a probe zero in accordance with paragraph 4.2.2; - set a required sound velocity of the material. The sequence of a sound

velocity setting and information displayed on the indicator is shown in Table 8.

Table 8

Actions performed Information displayed on

the indicator

1. Press the MODE key and wait until the indicator shows the name of the setting sound velocity mode.

2. Press the “☼☼ \ ”

button. The indicator will show the current value of ultrasound velocity in m/s

Then it is necessary: 3. Using the "▼" (velocity decrease) and "▲" (velocity increase) keys set a required velocity value. 4. Retention of the selected velocity value is carried out automatically after you exit this mode by pressing the MODE key.

4.2.3 Measurement resolution setting Depending on the required measurement inaccuracy and speed of

control carrying out the thickness gauge allows to set one of two resolution values – 0.1 or 0.01 mm.

Measuring with resolution 0.1 mm is characterized by the maximum speed – 10 measurements per second (this mode is suitable when you work with minimum measured value fixation in the case of the component surfaces scanning without tearing the probe from the surface).

Measuring with resolution 0.01 mm is characterized by the speed of 4 measurements per second that provides an appropriate measurement inaccuracy.

The sequence of actions taken to set resolution and information

displayed on the indicator is shown in Table 9.

Table 9

Actions performed Information displayed

on the indicator

1. Press the MODE key and wait until the indicator shows the name of the setting resolution mode.

2. Press the “☼☼ \ ”

button. The indicator will show the current resolution value.

Then it is necessary: 3. Using the "▼" (decrease) and "▲" (increase) keys set a required resolution. 4. Retention of the selected resolution value of measurements is carried out automatically after you exit this mode by pressing the MODE key.

4.2.4 Indicator illumination turning on/off The thickness gage has a possibility of indicator illumination to work in

dark places.

To turn the illumination on you should press the “☼☼ \ ” key in the main

measurement mode. After pressing this key the indicator illumination will automatically turn on.

Indicator illumination will turn on if there is an acoustic contact of the probe with the component or when the keys are pressed. If during 7 seconds after the illumination turning on there isn’t an acoustic contact of the probe with the component or work with the keypad, the indicator’s illumination will turn off.

You should press the “☼☼ \ ” button for the second time in the main

measurement mode to turn the illumination off. 4.2.5 The power-off time setting The thickness gauge allows to set power-off time – a time interval after

expiration of which the device will automatically turn off if no measurements were carried out and the key buttons were not pressed.

The sequence of actions taken to set the power-off time and information displayed on the indicator is shown in Table 10.

Table 10

Actions performed Information displayed on

the indicator

1. Press the MODE key and wait until the indicator shows the name of the mode of setting automatic power-off time.

2. Press the “☼ \ ” button. The indicator will show the current value of automatic power-off time.

Then it is necessary: 3. Using the "▼" (decrease) and "▲" (increase) keys set a required set-

off time**. ** - it is possible to prohibit automatic shutdown of the device. In this

case it is necessary to select the option “No” by pressing the "▼" key sequentially.

4. Retention of the selected value of automatic power-off time is carried out automatically after you exit this mode by pressing the MODE key.

4.2.6 Adjustment of a thickness gage gain value When it is necessary to take measurements on the components with

great roughness or to control small-diameter pipes or components made of materials with a big sound damping coefficient (copper, lead, polyethylene, etc.) and when the technical characteristics of the probe have changed due to the wear, there can appear a necessity to adjust a thickness gage gain value.

If it is necessary to adjust a gain value in the course of work, you should press the GAIN key. This action activates the control function with the possibility of a gain value adjustment (the mark “Gain” is displayed on the indicator – see Fig.14).

Fig. 14

To increase the sensitivity of the thickness gauge with the connected probe it is necessary to increase an gain value by pressing the “▲” key.

In order to decrease the sensitivity of the thickness gage press the “▼” key and an gain value will diminish.

When you press the “▲” и “▼” keys an gain value starts to change and its current value is shown on the indicator (in dB relative to the input signal level). The range of gain value change makes up:

00…60 units with the step of 1 unit. The indicator displays the following information in the time of correction (Fig. 15):

Fig. 15

To exit the mode of setting the gain value, press the GAIN button. A

value of the selected gain for the connected probe will be stored in the thickness gauge memory.

Verification of gain value adjustment can be carried out on the sample pieces with measured thickness similar by their physical-mechanical properties (including their roughness) to the real components. The adjustment is right if the measuring results are repeated, if there are no outlying results and their correspondence to the real thickness of the sample pieces in the measuring points.

4.2.7 Turning minimum value fixation on/off In quite a number of cases during measurement it is necessary to fix a

minimum of readings for the time of an acoustic contact (for example, during control of pipes, during the search for local thinnings – flaws (cavities) on the components surfaces when a person carrying out defects examination scans the component surface on which couplant has been applied). Measurements with a minimum value fixation are carried out in the main measurement mode. The sequence of actions taken to turn a minimum value fixation on or off is shown in Table 11:

Table 11

Actions performed Information displayed on

the indicator

1. Press the MODE key and wait until the indicator shows the name of the mode of turning minimum measured value fixation on/off.

2. Press the “☼☼ \ ”

button. The indicator will show the current status: whether the function is on or off

Then it is necessary: 3. Using "▼" and "▲" keys turn the function on or off. 4. Retention of the selected status of minimum measured value fixation function is carried out automatically after you exit this mode by pressing the MODE key.

Further during measuring the thickness gauge will fix and show on the indicator the minimum measured value during the acoustic contact of the probe with the component, which will remain on the indicator after breakout of the probe from the component surface till the next measuring;

4.2.8 Measuring of component thickness. 4.2.8.1 Prepare the thickness gauge for operation in accordance with

paragraph 4.1.

After removal of the probe from the surface the indicator will show a measuring result. When you remove the probe from the surface it is necessary to observe whether a thick layer of couplant is remained on the gauging surface. A thick layer of couplant can lead to occurrence of false echo-signals and readings. In order to provide a required measuring inaccuracy you should regularly set probe zero in accordance with paragraph 4.2.1.

4.2.8.8 In the mode of minimum measured value fixation after this mode selection in accordance with paragraph 4.2.7 and couplant application place the probe by its gauging surface on the component surface, press it against this surface, wait till the mark

is lit and moving the probe over the surface fix minimum of the readings and read a measuring result. After removal of the probe from the surface the indicator will show a minimum measuring result. After removal of the probe from the surface the indicator will show a measuring result. When you remove the probe from the surface it is necessary to observe whether a thick layer of couplant is remained on the gauging surface. A thick layer of couplant can lead to occurrence of false echo-signals and readings. In order to provide a required measuring inaccuracy you should regularly set probe zero in accordance with paragraph 4.2.1.

4.2.8.8 In the mode of minimum measured value fixation after this mode selection in accordance with paragraph 4.2.7 and couplant application place the probe by its gauging surface on the component surface, press it against this surface, wait till the mark is lit and moving the probe over the surface fix minimum of the readings and read a measuring result. After removal of the probe from the surface the indicator will show a minimum measuring result.

4.2.9 Recording of results in memory and their review The thickness gauge allows to record up to 2000 measuring results in

the memory (with breaking into groups), to retain them even if the power is off and to view these results with the opportunity of transferring them to PC.

4.2.9.1 Recording of results in memory To record the results in the memory during the process of measurement

in the main measuring mode press the MEMORY key, wait till the mark “Mem” displays on the indicator (Fig. 16), and release the key.

Fig. 16

Results should be recorded in the following sequence: – after measurement completion and device breakout from the

component surface a measuring result will be displayed on the indicator; – in order to record this result into the next memory cell press the “▲”

key and hold it until a short-time message with the memory cell address appears on the indicator (Fig.17);

– to rewrite (change) the result in the last memory cell it is necessary: – to make a new measurement and after that: – to press the “▼” key and hold it until a short-time message with the

memory cell address appears on the indicator (Fig.17).

Fig. 17

After that the indicator will show a result of the last measurement

recorded into memory. 4.2.9.2 Reading of results stored in the device’s memory In order to read memory contents you should: Press the MODE key and hold it in this position until the message with

the name of this mode appears on the indicator (Fig.18)

Fig. 18

After the appearance of this message release the MODE key and press the

“☼☼ \ ” key to enter the mode. The indicator will show the message about

the first memory cell contents. To view (read) the results of other memory

cells it is necessary to press the “” key (decrease of number) or the “” key (increase of number) (Fig. 19):

Fig. 19

To exit the “reading memory” mode press the MODE key. 4.2.9.3 Thickness gauge memory cleaning If it is necessary to clean the memory at any moment without the

thickness gauge shutdown you should: – press the MEMORY key and wait till the mark “Mem” displays on the

indicator, and holding the key MEMORY wait until the following message appears on the indicator (Fig.20):

Fig. 20

– after appearance of the message for memory cleaning

confirmation*** press the “☼☼ \ ” button, after that the message

«CLEANING THE MEMORY» will blink twice. Then the following message will appear (Fig.21):

Fig. 21

Then the thickness gauge will automatically enter the measuring mode. *** – To cancel memory cleaning it is necessary to press the MODE

button when the message «CLEANING THE MEMORY» is displayed on the indicator. In this case the thickness gauge will enter the measuring mode.

4.2.10 Thickness gauge shutdown After measurement completion it is possible to shut the device down in

the automatic or manual mode. If you want to shut the device down in the manual mode you should

press the ON/OFF key on the keypad. After that the thickness gauge will turn itself off with saving in memory recorded measuring results, parameters of the last calibration and measuring modes.

If during a time interval, set in the “setting the time power off” mode (paragraph 4.2.5), no measurements are carried out and the keypad buttons are not pressed the thickness gauge will shut down automatically.

4.2.11 Transfer of measuring results to PC You can transfer measuring results stored in the device memory to IBM-

PC via RS-232 communication bus if it has an installed operating system WINDOWS 9x/Me/NT/2000/XP. Software which provides connection of the thickness gauge B5 to PC includes Constanta-DATA program.

Program operation is described in Appendix 3. 5 Maintenance 5.1 General instructions Maintenance of the thickness gage is carried out if there was found a

fault in the device operation. 6 Operating and service life and manufacturer's guarantee 6.1 Device service life is 10 years. 6.2 Guarantee period for the thickness gauge sensory processing

module and for the probes is 24 months after shipping date. The guarantee does not cover mechanical wear of contact surface of probes.

6.3 The manufacturer bears responsibility for the device quality during the guarantee period if user keeps the transportation, storage and

operating conditions. 7 Test certificate The ultrasonic thickness gauge B5 No._______ is ready for operation.

Date of manufacture_______________ Stamp here Calibration date_______________

Stamp here Verification officer:

Appendix 1 Thickness gauge B5 appearance

Appendix 2 Appearance of the probes to the thickness gauge B5

Appendix 3 Transfer of measuring results to PC using Constanta-DATA software

1. Installation of the software on your computer. It should be done before you connect the device to the computer for the first time.

1. Start an installer setup.exe, which can be found in the folder Constanta-DATA of a disk being a part of the delivery set;

2. Then one should follow the program’s instructions.

2. Transfer of measuring results to PC

1. Connect connectors of the device and the PC (port COM1 or COM2 PC XT/AT) using RS-232 cable;

2. To start the program «Constanta – DATA» double-click the icon of the program on the desktop WINDOWS or from menu – START → PROGRAMS → (the name of your folder where the program is stored) → Constanta – DATA;

3. On the monitor of your computer a window of a device type selection will be displayed. It is necessary to select «B5»;

4. Turn the device on by pressing "ON/OFF" button. The sequence of the following actions and information displayed on the

indicator is shown in Table 12.

Table 12

Actions performed Information displayed on

the indicator

1. Press the MODE key on the device keypad and hold it until the message appears in the display

2. Press the “☼☼ \ ” key to

enter the mode. The indicator will show the message-request

3. Choose the command "Get data". The display will show the data transfering window.

Press the “☼☼ \ ” key on the

device. The indicator will show the message about a transfering process:

4. On the monitor of your computer click «Ok» to close the message box "DATA ARE IMPORTED SUCCESSFULLY". On the monitor, a window with imported data table broken into groups will be displayed. On the termination of data transfer, the device indicator will show the following message:

On the termination of the data transfer procedure, shut down the device

and disconnect a communication cable from the PC.

Appendix 4 Sound velocities of some common materials.

Material Sound velocities (m/s)

Aluminum 6350

Brass 4390

Cast Iron 4570

Constantan 5230

Copper 4670

Epoxy resin 2540

Glass, crown 5660

Glass, flint 4270

Ice 3990

Iron 5890

Lead 2160

Magnesium 5790

Nickel 5640

Nylon 2590

Paraffin 2210

Plexiglass 2690

Polystyrene 2340

Porcelain 5840

PVC 2390

Quartz glass 5640

Rubber, vulcanized 2310

Steel, common 5920

Steel, stainless 5660

Teflon 1420

Tin 3330

Titanium 6100

Zinc 4220

Water 1470